In our continuing series looking at the latest medical research and news on COVID-19, Libby Denkmann speaks with Dr. Dean Blumberg from UC Davis.

Topics today include:

• Merck will help Johnson & Johnson make its COVID-19 vaccine, Biden to announce 

• CDC chief warns of 'potential fourth surge' and urges US to keep COVID-19 rules 

• Hospital transfers spark COVID surge at LA nursing homes 

• L.A. County says rate of positive COVID-19 tests is ‘lowest it’s ever been’ 

• Teachers, food workers now eligible to get vaccinated in LA County

• Vaccine rollout for farmworkers in California is messy

• Blue Shield is responsible for California’s vaccine distribution - how are they following through?

• CNN: Single Pfizer vaccine shot provides strong protection for those who've had Covid-19, UK studies suggest

With guest host Libby Denkmann.

Guest:

Dean Blumberg, M.D., professor of medicine and chief of Pediatric Infectious Diseases at UC Davis Children’s Hospital